SHEAR LIMIT OF NU I-BEAMS

Based on the extensive literature review, parametric study, and full scale testing, an integrated and simplified shear design model has been developed. It has been found that the proposed model results in a much simpler design without sacrificing the shear capacity of the prestressed concrete members and without significantly impacting the cost. It has also been determined that, for properly detailed prestressed concrete bridge I-beams, the limit of 0.25 compressive strength x width of web x effective shear depth for maximum shear reinforcement is attainable. A key factor is the anchorage of the longitudinal reinforcement. The horizontal wires of the orthogonal welded wire fabric have been found to be extremely effective to control shear cracking and increase the shear capacity.

• Corporate Authors:

  University of Nebraska, Omaha

  Department of Civil Engineering, 6001 Dodge Street
  Omaha, NE  United States  68182-0178

  Nebraska Department of Roads

  1500 Highway 2, P.O. Box 94759
  Lincoln, NE  United States  68509

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Tadros, M K
  • Yehia, S A
• Publication Date: 2001-11

Language

• English

Media Info

• Features: Appendices; Figures; Photos; References; Tables;
• Pagination: 439 p.

Subject/Index Terms

• TRT Terms: Anchorages; Compressive strength; Design; I beams; Literature reviews; Longitudinal reinforcement; Mathematical models; Prestressed concrete; Prototype tests; Shear reinforcement; Shear tests; Welded wire fabrics
• Uncontrolled Terms: Shear capacity
• Subject Areas: Bridges and other structures; Design; Highways; I24: Design of Bridges and Retaining Walls;

Filing Info

• Accession Number: 00921497
• Record Type: Publication
• Report/Paper Numbers: FHWA-NE-00-P517,, Final Report
• Contract Numbers: SPR-PL-1(35)P517
• Files: TRIS, USDOT, STATEDOT
• Created Date: Mar 12 2002 12:00AM